EP2243851A4 - High-strength hot-rolled steel sheet and process for production thereof - Google Patents

High-strength hot-rolled steel sheet and process for production thereof

Info

Publication number
EP2243851A4
EP2243851A4 EP09707458A EP09707458A EP2243851A4 EP 2243851 A4 EP2243851 A4 EP 2243851A4 EP 09707458 A EP09707458 A EP 09707458A EP 09707458 A EP09707458 A EP 09707458A EP 2243851 A4 EP2243851 A4 EP 2243851A4
Authority
EP
European Patent Office
Prior art keywords
production
steel sheet
rolled steel
strength hot
hot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09707458A
Other languages
German (de)
French (fr)
Other versions
EP2243851B1 (en
EP2243851A1 (en
Inventor
Shinjiro Kaneko
Kaneharu Okuda
Tetsuo Shimizu
Noriaki Moriyasu
Masahide Watabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP2243851A1 publication Critical patent/EP2243851A1/en
Publication of EP2243851A4 publication Critical patent/EP2243851A4/en
Application granted granted Critical
Publication of EP2243851B1 publication Critical patent/EP2243851B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/20—Isothermal quenching, e.g. bainitic hardening
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/004—Dispersions; Precipitations
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
  • Metal Rolling (AREA)
EP09707458.7A 2008-02-08 2009-02-04 High-strength hot-rolled steel sheet and process for production thereof Not-in-force EP2243851B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008028453A JP5194857B2 (en) 2008-02-08 2008-02-08 High strength hot rolled steel sheet and method for producing the same
PCT/JP2009/052245 WO2009099238A1 (en) 2008-02-08 2009-02-04 High-strength hot-rolled steel sheet and process for production thereof

Publications (3)

Publication Number Publication Date
EP2243851A1 EP2243851A1 (en) 2010-10-27
EP2243851A4 true EP2243851A4 (en) 2012-04-25
EP2243851B1 EP2243851B1 (en) 2017-08-02

Family

ID=40952300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09707458.7A Not-in-force EP2243851B1 (en) 2008-02-08 2009-02-04 High-strength hot-rolled steel sheet and process for production thereof

Country Status (6)

Country Link
US (1) US8696832B2 (en)
EP (1) EP2243851B1 (en)
JP (1) JP5194857B2 (en)
KR (1) KR101218020B1 (en)
CN (1) CN101939458B (en)
WO (1) WO2009099238A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5482204B2 (en) * 2010-01-05 2014-05-07 Ｊｆｅスチール株式会社 High strength hot rolled steel sheet and method for producing the same
JP5482205B2 (en) * 2010-01-05 2014-05-07 Ｊｆｅスチール株式会社 High strength hot rolled steel sheet and method for producing the same
JP5776398B2 (en) * 2011-02-24 2015-09-09 Ｊｆｅスチール株式会社 Low yield ratio high strength hot rolled steel sheet with excellent low temperature toughness and method for producing the same
JP5505572B2 (en) * 2012-01-06 2014-05-28 Ｊｆｅスチール株式会社 High strength hot rolled steel sheet and method for producing the same
CN104846276A (en) * 2015-05-11 2015-08-19 唐山钢铁集团有限责任公司 Automobile structural steel and production method thereof
KR20190126100A (en) * 2017-03-31 2019-11-08 닛폰세이테츠 가부시키가이샤 Hot rolled steel sheet and forged steel parts and their manufacturing method
CN110475889A (en) * 2017-03-31 2019-11-19 日本制铁株式会社 Hot rolled steel plate and steel forged part and its manufacturing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472208A (en) * 1982-06-28 1984-09-18 Sumitomo Metal Industries, Ltd. Hot-rolled high tensile titanium steel plates and production thereof
JPH06172924A (en) * 1992-12-02 1994-06-21 Kobe Steel Ltd High strength hot rolled steel plate excellent in stretch-flanging workability
US20040035508A1 (en) * 2000-12-07 2004-02-26 Hiroyuki Okada High strength hot rolled steel plate excellent in enlargeability and ductility and method for producing thereof

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3145419B2 (en) 1991-01-14 2001-03-12 川崎製鉄株式会社 Manufacturing method of hot-rolled high-strength steel sheet with excellent material uniformity
JPH0826433B2 (en) * 1992-12-28 1996-03-13 株式会社神戸製鋼所 High strength hot rolled steel sheet with excellent stretch flangeability
JP3233743B2 (en) 1993-06-28 2001-11-26 株式会社神戸製鋼所 High strength hot rolled steel sheet with excellent stretch flangeability
JPH09111355A (en) * 1995-10-20 1997-04-28 Sumitomo Metal Ind Ltd Production of high strength hot rolled steel plate excellent in corrosion resistance and workability
JP3790135B2 (en) * 2000-07-24 2006-06-28 株式会社神戸製鋼所 High-strength hot-rolled steel sheet with excellent stretch flangeability and manufacturing method thereof
JP3888128B2 (en) 2000-10-31 2007-02-28 Ｊｆｅスチール株式会社 High formability, high-tensile hot-rolled steel sheet with excellent material uniformity, manufacturing method and processing method thereof
JP4205853B2 (en) * 2000-11-24 2009-01-07 新日本製鐵株式会社 Hot-rolled steel sheet with excellent burring workability and fatigue characteristics and method for producing the same
JP4062118B2 (en) * 2002-03-22 2008-03-19 Ｊｆｅスチール株式会社 High-tensile hot-rolled steel sheet with excellent stretch characteristics and stretch flange characteristics and manufacturing method thereof
JP3858770B2 (en) * 2002-06-21 2006-12-20 住友金属工業株式会社 High-tensile hot-rolled steel sheet and manufacturing method thereof
JP4692015B2 (en) * 2004-03-30 2011-06-01 Ｊｆｅスチール株式会社 High ductility hot-rolled steel sheet with excellent stretch flangeability and fatigue characteristics and method for producing the same
CN100519805C (en) * 2004-03-31 2009-07-29 杰富意钢铁株式会社 High-rigidity/high-strength thin steel sheet and manufacturing method therefor
JP5070732B2 (en) * 2005-05-30 2012-11-14 Ｊｆｅスチール株式会社 High-strength hot-rolled steel sheet excellent in elongation characteristics, stretch flange characteristics and tensile fatigue characteristics, and method for producing the same
JP4803055B2 (en) * 2006-02-10 2011-10-26 Ｊｆｅスチール株式会社 Manufacturing method of hot-rolled steel sheet for high-strength cold-rolled steel sheet
JP5040197B2 (en) * 2006-07-10 2012-10-03 Ｊｆｅスチール株式会社 Hot-rolled thin steel sheet with excellent workability and excellent strength and toughness after heat treatment and method for producing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472208A (en) * 1982-06-28 1984-09-18 Sumitomo Metal Industries, Ltd. Hot-rolled high tensile titanium steel plates and production thereof
JPH06172924A (en) * 1992-12-02 1994-06-21 Kobe Steel Ltd High strength hot rolled steel plate excellent in stretch-flanging workability
US20040035508A1 (en) * 2000-12-07 2004-02-26 Hiroyuki Okada High strength hot rolled steel plate excellent in enlargeability and ductility and method for producing thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EVANS P J ET AL: "HIGH STRENGTH C-MN STEELS FOR AUTOMOTIVE APPLICATIONS", IRONMAKING & STEELMAKING: PROCESSES, PRODUCTS AND APPLICATIONS, MANEY PUBLISHING, UNITED KINGDOM, vol. 24, no. 5, 1 January 1997 (1997-01-01), pages 361 - 367, XP002246410, ISSN: 0301-9233 *
KASHIMA T ET AL: "STRETCH-FLANGEABILITY OF HIGH STRENGTH HOT ROLLED STEEL SHEETS WITH BAINITIC-FERRITE MICROSTRUCTURE", TETSU TO HAGANE: JOURNAL OF THE IRON AND STEEL INSTITUTE OFJAPAN, IRON AND STEEL INSTITUTE OF JAPAN. TOKYO, JP, vol. 67, no. 3, 1 March 2001 (2001-03-01), pages 146 - 151, XP002908841, ISSN: 0021-1575 *
See also references of WO2009099238A1 *

Also Published As

Publication number Publication date
EP2243851B1 (en) 2017-08-02
WO2009099238A1 (en) 2009-08-13
US20100314010A1 (en) 2010-12-16
CN101939458A (en) 2011-01-05
US8696832B2 (en) 2014-04-15
KR101218020B1 (en) 2013-01-02
KR20100097748A (en) 2010-09-03
EP2243851A1 (en) 2010-10-27
CN101939458B (en) 2013-02-06
JP5194857B2 (en) 2013-05-08
JP2009185360A (en) 2009-08-20

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